Built as a F.1 and converted to an F.2 prototype with a Rolls Royce Nene engine in place of the DH Goblin. The aircraft later acquired two "elephant's ears "dorsal intakes to feed more air to the rear face of the impeller. Buffeting from these intakes created handling problems. It did not stop the RAAF from selecting the Nene, which has more power than the Goblin, for its Vampire fighters. The elephant's ears were eventually replaced by intakes under the fuselage. The French air force also adopted the Nene. Photo from: Imperial War Museums